Building block and wall.



No. 743,391.- PATENTED NOV.-3, 1903. F. E. KIDDER.

BUILDING BLOUK AND WALL.

APPLICATION FILED MAY 29, 1903.

N0 MODEL.

UNITED STATES I Patented November 3, 1903.

FRANK E. KIDDER, or DENVER, COLORADO.

BUILDING BLOCK AND WALL.

SPECIFICATION forming part of Letters Patent No. 743,391, dated November3, 1903. Application filed May 29,1903. Serial No. 159,357. (No model.)

To all whom it may concern:

Be it known that I, FRANK E. KIDDER, a citizen of the United States ofAmerica, residing in the city and county of Denver and State ofColorado, have invented certain new and useful Improvements inBuilding-Blocks and WValls; and I do declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to thefigures of reference marked thereon, which forni a part of thisspecification.

My invention relates to'improvements in building-blocks and walls, myobject being to provide a block which when laid in a wall shall form aconstruction which shall be exceedingly durable and possess the maximumefficiency in a construction of this class; and to this end theinvention consists of the features hereinafter described and claimed,all of which will be fully understood by reference to the accompanyingdrawings, in which is illustrated an embodiment thereof.

In the drawings, Figure 1 is a perspective view in detail of one form ofmy improved building-block. Fig. 2 is a similar view showing a number ofthese blocks laid in a wall, all the structure except the uppermostblock being shown in thelower or one of the single courses. Figs. 3, 4,and 5 are top views in detail, illustrating a number of blocksassembled, the blocks being of a slightly-modified form of constructionas compared with the construction shown in Fig. 1.

The same referencecharacters indicate the same parts in all the views.

Referring first to Figs. 1 and 2, let the numeral 5 designate myimproved buildingblock, whose body portion 5 is provided with a centralprojection 5, notched at its top and bottom, as shown at 5. Theextremities of this block are reduced, as shown at 5 From the inner faceof the wall to the recess 5 the block is curved in this form ofconstruction, as shown at 5 while the face of the projec tion 5 is fiator lies in a single plane. WVhen this block is laid in a wall, theblocks are arranged end to end and are supposed to be two blocks inthickness, as shown in Fig. 2 of the drawings. These blocks are soarranged that they break joints vertically-that is to say, the doublerecess formed by the two recesses 5 where the two blocks are brought endto end is of a suitable width to receive the face or outer edge of theprojection 5 of the block on the opposite side of the wall 6, breakingthe vertical joints. This will be clearly understood by reference toFig. 2. By forming the recesses 5 the construction is made practicable,whereby the maximum length of the projection 5 may be employed, thusgiving the wall the greatest possible binding or hold ing efficiency, sofar as uniting the blocks together in-the completed wall is concerned.

The forms of construction shown in Figs. 3, 4, and 5 vary only indetails from the construction shown in Figs. 1 and 2, already described.Hence the body of the block in each case will be designated 5, the sameas in the principal views. In the form of, construction shown in Fig. 3the extremities of the block are provided with curved recesses 5 whichwhen two blocks are put together end to end form a semicircular recessadapted to receive the counterpart or rounded face 5 of the projection5. I

In the construction shown in Fig. 4 the projection 5 is substantiallythe same as that shown in Fig. 1, but the recesses in the extremities ofthe block, which are designated 5 are right angular in shape instead ofbeing curved on one side, as shown in Figs. 1 and 2. The two recesses 5when the blocks are brought end to end form a double recess for thereception of a fiat face of the projection 5, the same as in Figs. 1 and2. In the construction shown in Fig. 5 the face of the projection 5 ispointed, as shown at 5, being formed by two bevels which-form an angleof approximately forty-five degrees wi th the outer flat face of theblock, while the extremities of this form of block are beveled, as shownat 5, so that when two of the blocks are brought end to end a V- shapedrecess is formed which is the counterpart of the bevel or pointed faceof the projection 5 which pointed face or V- shaped recess is adapted toreceive.

From the foregoing description the use of my improved building -block toform walls will be readily understood, particularly by reference toFigs. 2 to 5, inclusive.

Having thus described my invention, What I claim is,

1. A building-block comprising a body part, and a central projectionWhose outer face is curved or rounded, and Whose extremities are curvedso that When the blocks are arranged end to end on opposite sides of aWall, the curved end recesses of tWo blocks form a semicircular recessadapted to receive the curved face of the projection of thecorresponding block on the opposite side of the Wall.

2. A Wall composed of building-blocks consisting of vertical coursesarranged one above another, each block having a central projection andend recesses the blocks of any course being arranged end to end in sucha manner as to break vertical joints on opposite sides of the wall, theprojections of the blocks of the different vertical courses beingalternately arranged in such a manner that the central projections ofthe blocks on opposite sides of the Wall occupying a positionimmediately above and below each other, coincide as to position butextend in opposite directions.

In testimony whereof I affix my signature in presence of two Witnesses.

FRANK E. KIDDER.

\Vitnesses:

DENA NELSON, A. J. OBRIEN.

